Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 210Get this manual
CLUTCHING Measuring Belt Deflection
IMPORTANT NOTE: Do not apply excessive pressure to force belt into driven sheavesThis will result in an improper measurementIf belt deflection cannot be adjusted within specification using methods below, inspect center distance and compare to specifications on page 5.301Measure belt deflection with both clutches at rest and in their full neutral position2Place straight edge on the belt and apply downward pressure while measuring at the point shownBelt Deflection 14 (3.2 cm) Straight Edge 14 (3.2 cm)